The camera

1) The camera obscura effect is an illusion where you get a completely dark room and put a tiny hole in one wall. Then, a light is focused through the hole and and the scene in the next room is projected upside down on the opposite wall.

2) In the 17th century, the camera lens was invented, bringing man one step closer to the modern camera.

3) The first modern camera had three parts. A glass lens, a dark box, and some film.

4) Modern cameras are still pretty similar to the ones from the olden days. Light goes into the camera through the lens and exposes the film, thus creating a photo.
5) Digital cameras use digital film to capture photos, as opposed to real film.
6) Both auto and program mode are quite automatic. But with auto mode, the camera controls everything, while with program mode, you get to control certain thing like flash.
7) Portrait mode blurs out the background by using the fastest available lens setting.
8) Sports mode is used to freeze motion and achieves this by using the fastest shutter speed possible.
9) The half-press button tells the camera that it should be ready because you are about to take a photo.
10) This icon is the no-flash icon and it means the flash is off.
11) The icon shown to me is the auto-flash icon and is used when the photographer wants the camera to tell it when the flash is needed.
12) If you take a picture and there is too much light, your photo will be washed out.
13) Similarly, if you don't have enough light, your photo will be really dark.
14) A "stop" is used to show a change in brightness.
15) If a world had 2 suns, there would be 1 stop.
16) If a world had 4 suns, there would be 2 stops.
17) A longer shutter speed allows more light in the photo.
18) A shorter shutter speed allows less light in the photo.
19) The aperture controls the amount of light that the film gets.
20) If you want more light, than you would reduce the f-stop size.